I have a Time Capsule as the hub of my network, I have two other airport extremes connected wirelessly to bridge the network right now.

How, and what would it change if I could extend the network (bridge) over ehternet? For example, I have an ethernet port in my upstairs office, but the Time Capsule is down on the opposite end of the house in the basement (my house has 3 floors). Would it be faster, stronger, and just better to extend over ethernet?
Thank you!

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